Downslope granular flow through a forest of obstacles
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866909198568128512 |
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| author | Texier, Baptiste Darbois Bertho, Yann Gondret, Philippe |
| author_facet | Texier, Baptiste Darbois Bertho, Yann Gondret, Philippe |
| contents | We investigate the effect of a forest of pillars on a granular layer steadily flowing over a rough inclined plane. We quantify experimentally how the steady flow rate of grains is affected by the inter-pillars distance for different layer thicknesses and slope angles. We then propose a model based on a depth-average approximation associated with $μ(I)$ rheology that considers the additional force exerted by the pillars on the granular layer. This model succeeds in accounting for most of the observed results when taking into account some inertia due to the nonvanishing Froude number of the flow. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2303_01617 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Downslope granular flow through a forest of obstacles Texier, Baptiste Darbois Bertho, Yann Gondret, Philippe Soft Condensed Matter Fluid Dynamics Geophysics We investigate the effect of a forest of pillars on a granular layer steadily flowing over a rough inclined plane. We quantify experimentally how the steady flow rate of grains is affected by the inter-pillars distance for different layer thicknesses and slope angles. We then propose a model based on a depth-average approximation associated with $μ(I)$ rheology that considers the additional force exerted by the pillars on the granular layer. This model succeeds in accounting for most of the observed results when taking into account some inertia due to the nonvanishing Froude number of the flow. |
| title | Downslope granular flow through a forest of obstacles |
| topic | Soft Condensed Matter Fluid Dynamics Geophysics |
| url | https://arxiv.org/abs/2303.01617 |